Twitch hosted 21m unique viewers during E3 2015

Twitch has released an infographic showcasing the video broadcasting network's viewer engagement during E3 earlier this month.

The site brought in over 21m unique viewers throughout the week surrounding the event, with 840,000 peak concurrent viewers. That's up significantly from 12m unique viewers and 400,000 peak concurent viewers last year.

The company also debuted co-streaming for the event – allowing for official broadcasts in German, French, and Dutch. More than 1,800 unique channels participated, making up 35 per cent of the network's total E3 viewership.

The Twitch-sponsored Humble Bundle E3 Digital Ticket sold more than 174,000 units as well, bringing in nearly $400,000 for charity, developer participants and organizers.